Valve-actuating mechanism for carbid-receptacles.



J. A. n4 T. N. JOHNSON. VALVE AGTUATING MBGHANISM FOR GARBID REGEPTAOLBS. APPLICATION FILED lJULYAZS, 1914. 1,1 30,906. Patented Mar. 9, 1915.

O E S VUM 1115i 11 1A lll .sse/2 .u im... W.. A w Nmvm m 2 2 A UNITED STATES PATENT OFFICE.

JOHN A. JOHNSON, or omwronnsvrnnn, ANDv THEODOR N. JOHNSON, OF'WAVELAND,

INDIANA, ASSIGNORS, BY DIRECT AND MESNE ASSIGNMENTS, TO JOHNSON ACETY- LENE GAS COMPANY, OF CRAWFORDSVILLE, INDIANA, A CORPORATION.

VALVE-AOTUATING MncHANIsM FOR oARBIn-REOEPTAOLES.

To all whom it may concern: V

Be it known that we, JOHN A. JOHNSON and THnoDoRn N. JOHNSON, citizens of the United States, residing, respectively, at Crawfordsville and Waveland, in the county of Montgomery and State of Indiana, have invented certain new and useful Improve,

ments in Valve-Actuating Mechanism for Carbid-Receptacles, of which the :following is a specification. p

This invention relates to a certain mechanical device for actuating the valves for discharging carbid from the carbid-receptacles into thev generating chambers of acety' ing the valves is equally appliedk to the op-v posite sides so that free and easy actuation of the valves is maintained at all times and lateralV strains, which generally interfere with the movements of the parts, will be eliminated.

We accomplish the above objectsofothe invention by means of the construction illustrated in the accompanying drawings, forming a part hereof, in which- Figure 1 is a central vertical section through the carbid holding receptacle, showing the vvalves and valve operating mechanism in operative position. Fig. 2 is an underside plan view of the casting formingthe upper part and top of thecarbid-receptacle, this view being on a considerably reduced scale from that shown in Fig. 1. Y

Referring to the drawings, the carbid-receptacle comprises a hollow cylinder 10, usually formed of sheet metal, the lower end of said cylinder engaging the outer periphery of the upper end of a conically-shaped bottom 11, which bottom is provided with a discharge opening 12. The upper end of the cylinder 10 surrounds the outer periphery of the upper casting 14, which not only forms a bearing for the casting vat the top, but the casting 14 also provides a top l5 for inclosing the upper end of the cylinder l10. The space Within the cylinder 10 Specification of Letters Patent.

Y Patent-ea Mana, 191,5.

Application led .Tuly 28, 1914. Serial N o. 853,780.

betweenthetop 15 and the bottom 11 pro-V vides al receptacle for holding carbid which is fed through the discharge opening 12, the bottom 11, into'the generating chamber of the apparatus at proper times- The discharge opening 12 is kept normally closed by means of a conically-shaped valve 16, arranged exteriorly Vof the carbid-receptacle, and said valve 16 is mounted upon a valverod 17 which extends vertically and centrally through the 'carbid-receptacle. The

upper end of the valve-rod 17 passes through an aperture 18 in the top 15 and to the loutside of the receptacle, end of the valve-rod17 is enlarged, as at 19, to provide an offset or shoulder 20 which and the said upper provides a bearing-seat for a spring 21. `The spring 21, at its upper end bears againstv said shoulder 20V and its lower end bears upon the Ufshaped hanger 22, the strength sist the action vof gravitation of the valverod 17 and the valve 16 and thus keep the valve 16 normallyseated within the dischargev 'opening 12. A second protection valve 25, located within'the carbid-recep-- tacle, surrounds the valve-rod 17 and protects the discharge opening 12 from above. The valve 25 has vertical movement independent of thevalve-rod v17 effected by means of a hollow tube 26 which is threaded into an aperture 27 which'aords a freepassage for the valve-rod 17 through the center of thevalve 25. The tubek 26 is provided on' its upper end with an annularv horizontally projecting flange 30 to be 'engaged by suitable lifting levers for lifting the valve 25 in a vertical direction. The valveV 25 is of metal, and as shown possesses considerable weight so thatunder normal conditions the lower edge of said valve 25 would be nor- `v of said spring being merely sufficient to remally kept ip Contact with the interior surface of the conicallyV-shaped bottom 11. The

lower end of the valve 25 is recessed with walls tapering toward the lower edge, whereby a knife-edge formation is provided for severing lumps of carbid that may engage the edge of said valve. This construction of the valve 25 means that it will always be properly seated and in Acontact with the bottom 11 when occupying its lowest position. As heretofore stated, 'the valve25 has vertical movement, parted through the tube 26 by means of a pair of lifting levers 35 which are arranged which movement is im- A from the discharge opening 12. Downward movement is also' imparted to the hanger 22 which depresses the outer ends of the levers- 35, causing the inner ends of the levers to travel upwardlyvinthe opposite direction. lllhis upward/movement elevates the tube 26 and the valve 25, allowing the carbid within the carbid-receptacle to flow freely through its discharge opening 12 into the generating chamber until sufiicient gas has been generated to remove the pressure of the gas bell, or other device for actuating the valve-rod y17, when the valve 16 will immediately close the discharge opening 12 and cut off'the flow of carbid. The pressure kvhaving been removed from the upper end of vthe valve-rod 417 also allows the hanger 22 to move upward and instant lowering of the valve 25 into contact with the bottom 11, so

that continued movement ofthe carbid to- A ward the discharge opening 12 andL valve f 16, which might accidentally unseat said valve 16, is e'ectually cut off( The movements of the valves 16 and 25 in opposite directions, to regulate the flow of ycarbid through the discharge opening 12, are induced, first, by the tendency of the spring 21 to expand, after being depressed, which forces the valve-rod 17 up and the hanger 22 down and, second, by taking ad-i Vantage of the action of gravitation of the heavily weighted valve 25.

To prevent the mass or volume of carbid within the carbid receptacle from impinging and interfering with the movements of the valve 25 and the tube 26, said valve and tube are Vprotected by means of a hollow hood 40V and hollow tube 41. The lower edge of the hood 40, where it contacts the bottom 11., is provided with a plurality of notches 42 to form-passageways for the carbid, in its movement toward the discharge opening 12, and the hood 40 is of sufficient vertical length to prevent interference with the vertical movement of the valve 25.

As shown in Fig. 2 of the drawings, the top 15 is provided with suitable openings 13 and these openings are covered by means of doors 45 whereby access may be had to the interior and for filling the carbid-re,

tion with more or less minuteness as regards details of .construction-and` arrangement and 1 as being embodied in certain precise forms, we do not desire to'be limited theretoun` close the said discharge opening in said re-.-

ceptacle, a secondaryvalve arranged within said receptacle for sealing said discharge opening from above, a hollow tube surrounding the valve-stem for `actuating the. secondary valve, lifting-means engaging the;

opposite sides of.y the hollow tube for applying a uniform lifting force to the oppol site sides of said hollow tube, means engag ing and uniformlyractuating said liftingl means when the valve-stem` is depressed..iv

2. The combination., withl a carbid hold#v ing receptacle havinga discharge opening,

of a valve mounted externally of ysaid aref ceptacle for sealing said opening` lfrom be-y low, a valve-stem extending vertically through said receptacle for actuating; said..

valve, means for holdingsaid valve to nor.- mally close the said discharge opening `in said receptacle, a secondary valve arranged within said receptacle for sealing said discharge from above, means extendingparallel'with said valve-stem for actuating said secondary valve, a flange around the lupper l end of said parallel means, lifting-means forfapplying a uniform lifting force to the opposite sides of said flange, means for con-y necting and 'uniformly actuating `said `lifting-means to cause the secondary valveto` move upwardly when the valve-stem and its valve are depressed.

In witness whereof, we Vhave hereunto seti our hands and seals at Crawfordsville, Indiana, this 23rd day of July, A. D.` one thousand nine hundredv and fourteen.

JOHN i. JOHNSON.. a. 8.1. TiirOiiOiui N. JOHNSON. [as] Witnessesz K J. Covis Tonv, JAMES H. SANFORD.

Copies of this patent :may be obtaineditcr ve cents each, by addressing the Commissioners! Patenti 2 Washington, D. C. 

